Apparatus for controlling the flow of gas between flues in the heating chambers of a regenerative coke oven

ABSTRACT

Regenerative coke oven batteries have heating chambers on opposite sides of the coking chamber and the heating chambers have parallel spaced heating walls with a plurality of spaced flue walls extending transversely between and connected to the heating walls. The flue walls form a series of vertical flues in the heating chambers. Combustion of the gaseous fuels takes place in alternate flues and the gaseous products of combustion are directed to flow downwardly in the adjacent flue for further transfer of heat from the gases to the heating walls. The flue walls are formed of individual bricks in parallel courses with the bricks bonded to adjacent bricks. Cylindrical passageways are formed in the bricks in spaced relation to the edges of the bricks, particularly the horizontal edges so that the bond between adjacent bricks is not interrupted by the horizontal passageways. The flow of gases through the passageways is controlled by slab-like dampener bricks. The bricks are positioned in a generally vertical position parallel to the flue wall and are arranged to pivot in one direction into abutting relation with the flue wall and in overlying relation with the passageways to thereby control the flow of gas therethrough.

United States Patent J akobi 1451' Oct. 24, 1972 [54] APPARATUS FORCONTROLLING THE FLOW OF GAS BETWEEN FLUES IN THE HEATING CHAMBERS OF AREGENERATIVE COKE OVEN [72] Inventor: Wilhelm Jakobi, Essen, Germany[73] Assignee: Heinrich Koppers Gesellschaft mit beschrankter Haftung,Essen, Germany [22] Filed: Aug. 28, 1970 [21] Appl. No.: 67,888

[30] Foreign Application Priority Data Sept. 19, 1969 Germany ..P 19 47389.3

52] 11.s.c1 ..263/15 R, 202/139, 202/151, 263/51 51] Int. Cl ..F27b17/00, c101) 5/02 [58] Field of Search ..263/15, 51; 202/139, 140, 141,-

Primary Examiner--John J. Camby Attorney-Stanley J. Price, Jr.

[57 1 ABSTRACT Regenerative coke oven batteries have heating chambers onopposite sides of the coking chamber and the heating chambers haveparallel spaced heating walls with a plurality of spaced flue wallsextending transversely between and connected to the heating walls. Theflue walls form a series of vertical flues in the heating chambers.Combustion of the gaseous fuels takes place in alternate flues and thegaseous products of combustion are directed to flow downwardly in theadjacent flue for further transfer of heat from the gases to the heatingwalls. The flue walls are formed of individual bricks in parallelcourses with the bricks bonded to adjacent bricks. Cylindricalpassageways are formed in the bricks in spaced relation to the edges ofthe bricks, particularly the horizontal edges so that the bond betweenadjacent bricks is not interrupted by the horizontal passageways. Theflow of gases through the passageways is controlled by slablike dampenerbricks. The bricks are positioned in a generally vertical positionparallel to the flue wall and are arranged to pivot in one directioninto abutting relation with the flue wall and in overlying relation withthe passageways to thereby control the flow of gas therethrough.

10 Claims, 2 Drawing Figures APPARATUS FOR CONTROLLING THE FLOW OF GASBETWEEN FLUES IN THE HEATING CHAMBERS OF A REGENERATIVE COKE OVENBACKGROUND OF THE INVENTION 1. Field of the Invention This inventionrelates to apparatus for controlling the flow of gas between flues inthe heating chambers of a coke oven and more particularly tocylindrically shaped passageways in the flue wall and pivotable dampenerbricks.

2. Description of the Prior Art Regenerative coke oven batteries have apair of heating chambers on opposite sides of the coke oven chamber. Theheating chambers have transverse flue walls that divide the heatingchamber into a plurality of separate vertical flues. The flues in therespective heat- .ing chambers on opposite sides of the coke ovenchamber may be connected in a number of different fashions to circulatethe products of combustion from the on flue or flues to the off flue or.flues. The hairpin type oven, for example, connects one flue with theadjacent flue in the same heating chamber so that the on flue isadjacent to the off flue and the products of combustion flow upwardlythrough the on flue, through a horizontal passageway I or passagewaysinto the adjacent off flue and then downwardly through the off flue tothe regenerator therebelow. The hairpin type flues are illustrated anddescribed in U. S. Pat. Nos. 2,845,385 and 3,431,177.

As is illustrated in U. S. Pat. No. 2,845,385, passageways are providedin the flue walls adjacent the base of the heating wall to permitrecirculation of a portion of the products of combustion from the offflue to the on flue to thereby dilute the combustion gases in the onflue. It is desirable for optimum operation to control the flow ofcombustion gas through the respective passageways between adjacentflues.) In the past, the flow ,of gas through the passageways wascontrolled by means of sliding bricks similar to the sliding bricksillustrated in U. S. Pat. No. 2,100,762. The bricks are movedhorizontally by sliding on a support means into the desired positionwithin the respective flues by means of a long rod that extends down theflue from the top of the oven.

The known sliding bricks are relatively heavy and are difficult to movewith the long adjusting rod. Recently, ovens having a height of feet ormore increase the above discussed problems because of the added lengthof the actuating rods. There is a need for apparatus to easily controlthe flow of gases through the passageways in the flue wall.

In the past two rectangular openings or passageways have been providedin the base of the flue wall through which a portion of the products ofcombustion flow from one flue into the adjacent flue. The brick bondover the base of the heating flue is interrupted by these two relativelylarge openings or passageways and this substantially weakens the fluewall structure. The weakening is of particular importance in high ovenswith large capacity where premature damage to the do not substantiallyweaken the structure of the flue wall. I

SUMMARY OF THE INVENTION The hereinafter described invention is directedto a damper for controlling the flow of gas through passageways in acoke oven flue walland includes a dampener brick with a generallyrectangular configuration in section. The dampener brick has a frontwall, a rear wall, a top wall and a bottom wall. The length between thetop and bottom walls of the dampener brick is substantially greater thanthe thickness between the front and rear walls. A support means isprovided for the dampener brick adjacent to the vertical flue wall. Thedampener brick bottom wall is positioned on the support means in spacedrelation to the flue wall and extends upwardly therefrom. The dampenerbrick is arranged to pivot on the support means in a first direction toposition a portion of the front wall in abutting relation with the fluewall and overlying at least one of the gas flow passageways to controlthe flow of gas therethrough. The. dampener brick is pivotable in asecond direction with the front wall in spaced relation to the flue wallto permit relatively unobstructed flow of the gas through the horizontalpassageways.

' The passageways in the flue wall extend through the bricks forming theflue wall and are spaced from the edge portions of the bricks so thatthe bond between adjacent bricks remains uninterrupted. It is preferredthat the passageways have a generally cylindrical configuration and fourpassageways are provided in each of the bottom two courses of brick. Thedampener bricks are easily pivoted from an open to a closed position bythe pivot arrangement and the cylindrical passageways eliminate theinherent weakness in the flue walls caused by the interruption in thebrick bond between adjacent courses of brick.

. The principal feature of this invention is to provide a damperbrickfor controlling the flow of gas through passageways in the coke ovenflue wall that is moved from an open to a closed position by a pivotingaction.

Another feature of this invention is to provide a flue wall havingpassageways therethrough that do not interrupt the bond between adjacentbrick courses.

These and other features and advantages of this invention will be morecompletely disclosed and described in the following specification, theaccompanying drawings and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary sectional viewin elevation of a pair of adjacent flues with a flue wall therebetweenhaving cylindrical passageways therethrough and the improved dampenerbrick.

FIG. 2 is a view in vertical section taken along the line 11-11 of FIG.1 illustrating in elevation the cylindrical passageways through the fluewall.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings thereis illustrated a heating chamber generally designated by the numeral 10that has a pair of spaced heating walls 12 and 14. A flue wall 16extends transversely between and is connected to the heating walls 12and 14. The flue wall 16 forms a pair of vertical flues 18 and 20 in theheating chamber and other flue walls 22 and 24 extend between theheating walls 12 and 14 to form other flues within the heating chamber10.

Vertical fuel supply passageways 26 and 28 are provided for therespective flues 18 and to supply the gaseous fuel for combustion withinthe respective flues. Other vertical passageways. 30 and 32 are providedin the flues 18 and 20to supply air to the on flue and withdraw gaseousproducts of combustion from the off flue. For optimum combustion withinthe on flue, it is desirable at times to divert a portion of the gaseousproducts of combustion from the off to the on flue to dilute the gaseousmixture within the on flue.

The heating chamber has a base portion 34 on which the flue wall 16 issupported. The flue wall 16 is formed from a plurality of separatebricks as, for example, bricks 38, and 42 in FIG. 2, .to form the bottomcourse of bricks in the flue'wall 16. A second course of bricks 44, 46and 48 is positioned on the first course comprising bricks 38, 40 and42. As is illustrated, in FIG. 1, a plurality of other courses of bricksare positioned in overlying relation to each other 'to form the fluewall 16. The individual bricks 38, 40 and 42 are bonded to each other asare the bricks 44, 46 and 48. Similarly the overlying courses of bricksare also bonded to each other.

It should be noted in FIG. 2 that the upper edges of the bricks 38, 40and 42 abut the lower edges of bricks 44, 46 and 48 so that the bondbetween the first, second and third courses of bricks remainsuninterrupted. To convey the gaseous products of combustion from oneflue to the adjacent flue there are provided cylindrical passageways 50,52, S4 and 56 in the first course of brick in the flue wall'16.Additional cylindrical passageways 58, 60,62 and 64 extend through thebricks in the second course of bricks in the heating wall 16. With thisarrangement the cylindrical passageways are formed in the bricks and arespacedfrom the upper and lower faces or edges of the bricks so that thebond between adjacent bricks remains unobstructed and the flue wall 16is not weakened by the horizontal passageways extending therethrough.

In order to control the flow of gas through the passageways there areprovideda plurality of slab-like dampeners generally designated by thenumeral 66. The slab-like dampeners have a front wall 68, a rear wall70, a bottom wall 72 and a top wall 74. The bottom wall 72 has anarcuate configuration that is positioned in a mating arcuate recess 76in the heating chamber base portion 34. The arcuate recess 76 is spacedfrom the vertical flue wall 16 and is parallel thereto.

The slab-likedampener brick front wall 68 has an angularly divergingportion 78 that is arranged to abut the surface of the flue wall 16 whenit is pivoted to a closed position as is illustrated in phantom lines inFIG. 1..

The dampener brick 66 may be easily pivoted in a first direction by aconventional rod member to a position where the diverging surface 78 offront wall 68 abuts the flue wall 16 and is in overlying relation withthe passageways 62 and 54 to control the flow of gas therethrough. Whenit is desired to permit an un- 10 practice in the past.

restricted flow of gas through the passageways 62and 64, the slab-likedampenerbrick 66 is pivoted in a second direction until therear wall 78abuts a stop -member 80 formed in the conduit 32 as is illustrated in 5FIG. 1.

From the above description it will be apparent that it is now' possibleto easily open and close the passageways in the vertical flue wall 16without moving massive rectangular dampener bricks as has been the Also,with the cylindrical passageways through the flue wall, the bond betweenthe courses of brick remains uninterrupted so that the flue wall is notweakened by the horizontal passageways therethrough.

According to the provisions of the patent statutes, 1 have explained theprinciple, preferred construction and mode of operation of my inventionand have illustrated and described what I now consider to represent itsbest embodiments. However, I desire to have it understood that, withinthe scope of the appended claims, the invention may be practicedotherwise than as specifically illustrated and described.

I claim:

25 l. A damper for controlling the flow of gas through passageways in acoke oven flue wall comprising,

i a damper brick having a generally rectangular configuration in sectionwith a front wall, a rear wall, a top wall and a bottom wall,

and bottom walls substantially greater than the thickness between saidfront and rear walls, a vertical flue wall between a pair of adjacentflues, horizontal passageways in said fluewall for the flow 35 of gastherethrough from one flue to the other flue of said pair ofadjacent-flues,

a support means for said damper brick positioned adjacent to saidvertical flue wall, I

said damper brick bottom wall positioned on said support means in spacedrelation to said flue wall, and

said damper brick extending upwardly from said support means andarranged to pivot on said support means in a first direction to positiona portion of said front wall in abutting relation with said flue walland overlying at least one of said gas flow passageways to control theflow of gas therethrough and in a second direction with said front wallin spaced relation to said flue wall to permit relatively unobstructedflow of gas through said passageways.

2. A damper for controlling the flow of gas through passageways in acoke oven flue wall as set forth in claim 1 in which,

said bottom wall has an arcuate configuration in vertical sectionforming an arcuate bottom wall,

said support means having a transverse, arcuate recessed portionextending substantially parallel to said flue wall,

said arcuate bottom wall positioned in said arcuate recessed portion forpivotal movement of said damper brick therein.

3 A damper for controlling the flow of gas through passageways in a cokeoven flue wall as set forth in said damper brick having a length betweensaid topv 4. A damper for controlling the flow of gas throughpassageways in a coke oven flue wall as set forth in claim 1 in which,

said support means includes a support for said damper brick rear wall tolimit the pivotal movement of said damper brick in said second directionand maintain said damper brick in a generally upright position whilesaid damper brick front wall is in spaced relation to said flue wall.

5. A damper for controlling the flow of gas through passageways in acoke oven flue wall as set forth in claim 1 in which,

said front wall has an upper diverging portion extending angularlytoward said rear wall, said upper diverging portion arranged to abutsaid flue wall.

6. A damper for controlling the flow of gas through passageways in acoke oven flue wall as set forth in claim 5 in which,

said passageways in said flue wall have a generally cylindricalconfiguration and extend horizontally through the bricks forming saidflue wall.

7. In a regenerative coke oven the combination comprising,

a heating chamber having a pair of spaced parallel heating walls,

a flue wall extending transversely between said heating walls andconnected thereto,

said flue wall formed from a plurality of parallel courses of individualbricks bonded to adjacent bricks in said wall, and

certain of said bricks having horizontal passageways therethroughbetween adjacent flues spaced from the edge portions of said bricks sothat said bond between said adjacent bricks remains uninterrupted bysaid passageways.

8. A regenerative coke oven as set forth in claim 7 in which saidpassageways extend through the bricks in the two bottom courses of brickin said flue wall.

9. A regenerative coke oven as set forth in claim 8 in which saidpassageways have a generally cylindrical configuration.

10. A regenerative coke oven as set forth in claim 9 in which each ofsaid two bottom courses of brick in said flue wall have four passagewayswith a generally cylindrical configuration.

1. A damper for controlling the flow of gas through passageways in acoke oven flue wall comprising, a damper brick having a generallyrectangular configuration in section with a front wall, a rear wall, atop wall and a bottom wall, said damper brick having a length betweensaid top and bottom walls substantially greater than the thicknessbetween said front and rear walls, a vertical flue wall between a pairof adjacent flues, horizontal passageways in said flue wall for the flowof gas therethrough from one flue to the other flue of said pair ofadjacent flues, a support means for said damper brick positionedadjacent to said vertical flue wall, said damper brick bottom wallpositioned on said support means in spaced relation to said flue wall,and said damper brick extending upwardly from said support means andarranged to pivot on said support means in a first direction to positiona portion of said front wall in abutting relation with said flue walland overlying at least one of said gas flow passageways to control theflow of gas therethrough and in a second direction with said front wallin spaced relation to said flue wall to permit relatively unobstructedflow of gas through said passageways.
 2. A damper for controlling theflow of gas through passageways in a coke oven flue wall as set forth inclaim 1 in which, said bottom wall has an arcuate configuration invertical section forming an arcuate bottom wall, said support meanshaving a transverse arcuate recessed portion extending substantiallyparallel to said flue wall, said arcuate bottom wall positioned in saidarcuate recessed portion for pivotal movement of said damper bricktherein.
 3. A damper for controlling the flow of gas through passagewaysin a coke oven flue wall as set forth in claim 2 in which, saidtransverse recessed portion in said support means is spaced from saidflue wall.
 4. A damper for controlling the flow of gas throughpassageways in a coke oven flue wall as set forth in claim 1 in which,said support means includes a support for said damper brick rear wall tolimit the pivotal movement of said damper brick in said second directionand maintain said damper brick in a generally upright position whilesaid damper brick front wall is in spaced relation to said flue wall. 5.A damper for controlling the flow of gas through passageways in a cokeoven flue wall as set forth in claim 1 in which, said front wall has anupper diverging portion extending angularly toward said rear wall, saidupper diverging portion arranged to abut said flue wall.
 6. A damper forcontrolling the flow of gas through passageways in a coke oven flue wallas set forth in claim 5 in which, said passageways in said flue wallhave a generally cylindrical configuration and extend horizontallythrough the bricks forming said flue wall.
 7. In a regenerative cokeoven the combination comprising, a heating chamber having a pair ofspaced parallel heating walls, a flue wall extending transverselybetween said heating walls and connected thereto, said flue wall formedfrom a plurality of parallel courses of individual bricks bonded toadjacent bricks in said wall, and certain of said bricks havinghorizontal passageways therethrough between adjacent flues spaced fromthe edge portions of said brIcks so that said bond between said adjacentbricks remains uninterrupted by said passageways.
 8. A regenerative cokeoven as set forth in claim 7 in which said passageways extend throughthe bricks in the two bottom courses of brick in said flue wall.
 9. Aregenerative coke oven as set forth in claim 8 in which said passagewayshave a generally cylindrical configuration.
 10. A regenerative coke ovenas set forth in claim 9 in which each of said two bottom courses ofbrick in said flue wall have four passageways with a generallycylindrical configuration.